Activated and non-activated dephasing in a spin bath

E. Torrontegui, R. Kosloff

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We analyze different decoherence processes in a system coupled to a bath. Apart from the well known standard dephasing mechanism which is temperature dependent an alternative mechanism is presented, the spin-swap dephasing which does not need initial bath activation and is temperature independent. We show that for dipole interaction in the weak coupling regime the separation of time scales between system and bath can not produce pure dephasing, the process being accompanied by dissipation. Activated and non-activated dephasing processes are analyzed in a diamond nitrogen-vacancy center.

Original languageEnglish
Article number093001
JournalNew Journal of Physics
Volume18
Issue number9
DOIs
StatePublished - Sep 2016

Bibliographical note

Publisher Copyright:
© 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Keywords

  • decoherence
  • dephasing
  • open quantum systems

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